Spraying device



March 17, 1936. w. M. NlcosoN 2,034,151

SPRYING DEVICE Filed Sept. 26, A1934 Patented Mar. 17, 1936 UNITEDSTATES PATE T OFFICE SPRAYING DEVICE William M. Nicoson, Indiana, Pa.

Application September 26, 1934, Serial No. 745,622

3 Claims. (Cl. 299-88) This invention relates to spraying devices andmore particularly to spraying devices of the atomizer type, for exampledevices in which the flow of fluid under pressure, such as steam, isutilized to draw substance to be sprayed through a tube and to atomizeand spray it diifusely. The invention is particularly adapted for use inthe spraying of such insecticides or disinfectants as are rendered moreeffective when sprayed in heated condition.

An object of the invention is to provide a spraying device of thegeneral character referred to embodying improved structural featuresincluding means for p-re-heating substance to be sprayed before itreaches the spray nozzle.

Another object is to provide an improved organization of sprayer head,reservoir for substance to be sprayed, and support for the reservoir andhead.

A further object is to provide a sprayer of the character referred tohaving improved means for connection to fluid pressure supply hoses ortdifferent sizes. Other objects will become apparent from a reading ofthe following description, the appended claims, and the accompanyingdrawing, in which:

Figure 1 is a perspective view of a sprayer ernbodying the invention;

Figure 2 is a central vertical sectional view of my improved sprayer;

Figure 3 is a detail sectional View drawn on an enlarged scale andshowing an improved form of adjustable hose connection;

Figure 4 is a section taken on the line 4 4 of Figure 3; and

Figure 5 is a detail sectional view drawn on an enlarged scale andshowing a Inodication.

The illustrative embodiment of the invention shown in the drawingincludes a sprayer head generally designated A, a reservoir B forsubstance to be sprayed, and a support for the head and reservoir,generally designated C.

In the form shown, the head A includes a body I which conveniently maycomprise a screw cap or top of the type used on the well-known Masonjars. A flow pipe 2 extends across and is secured to the top side of thebody I by means of straps 3, one end of the pipe being swedged inwardlyto provide a discharge nozzle 4. A control valve IIa of any desired kindis interposed in the flow pipe for controlling the flow of uid underpressure.

A delivery tube 5 extends longitudinally through the iiow pipe from thedischarge nozzle 4 to a point over the center of the body I, where it isformed with a right angle bend 6 and extends downwardly as at I throughthe bottom of the pipe 2 and body I and into the reservoir B,terminating above the bottom f the latter as shown in Figure 2.

In accordance with one feature of the invention, the reservoir B istransparent so that the amount of insecticide or other substancecontained therein can readily be observed, and preferably the reservoircomprises an ordinary Mason jar prol0 vided with a threaded upper endadapted to connect with the threaded body I of the head A. In order toprevent breaking of the reservoir jar,

I provide the novel supporting means C which comprises an annular base12 of larger diameter 15 than the reservoir, and a plurality of spacedlegs 8 connecting the base Ia and sprayer head A for supporting the headand the reservoir B with the bottom of the latter disposed above and outof contact with a table top or other resting surface 9, as shown inFigure 1. It is apparent that the support C protects the relativelyfragile glass reservoir against accidental breakage without interferingwith the operators observing the level of liquid in the reservoir, anadvantage of particular importance when the device is to be carriedaround from place to place, as in the disinfecting of food plants or thelike. Inasmuch as the sprayer described herein is thus adaptedparticularly for work requiring a portable unit, I preferably provide acarrying handle IIJ secured to the body I of the head.

When it is desired to refill the reservoir B, the latter is unscrewedfrom the head A and is withdrawn downwardly through the base 'la of thesupport C, as indicated in dotted lines in Figure 2. After the reservoiris refilled, it is inserted upwardly through the base 'IEL and screwedto the head. 40

I have found that some insecticides are rendered more effective if theyare pre-heated before being sprayed, although it may be undesirable topre-heat the whole mass of liquid insecticide in the reservoir B. Inorder to effect the desired pre-heating without heating the insecticidewithin the reservoir, a substantial portion of the delivery tube 5 isextended through the flow pipe 2 as described above, and steam isemployed as the pressure fluid for effecting atomization. The steam,passing around the delivery tube 5, heats the insecticide as the latterapproaches the discharge nozzle 4.

In the form shown in Figure 5, the portion of the delivery tube whichextends through the flow pipe is coiled, as at I I, whereby a stillgreater preheating of the insecticide can be effected.

A further feature of the invention resides in the provision of animproved means for facilitating connection of the flow pipe to steamsupply hoses of various sizes. As shown in Figures 1, 3, and 4 the flowpipe is provided with a plurality of spaced rings or flanges I2, I3, andI4 of different diameters, the diameters increasing progressively fromthe end of the pipe toward the head A. The steam hose I5, which acts asa source of steam supply, shown in Figure 3 is of relatively Alargeinside diameter, corresponding substantially to theV hoses of variousdifferent sizes `to the ow pipe 2,.

thereby making the device adapted for use in connection Withhoseequipment in diierent buildings or different parts of the samebuilding..

Preferably an adjustable clamp II of any suitable kind is provided forsecuring a hose to the associated ring, it being understood that becauseof its adjustability the clamp is adapted to secure a hose to any one ofthe rings.

It is apparent from the foregoing description that I have provided aspraying unit which is adapted to be moved around from place to placewith a minimum of danger of breakage of the glass reservoir B, and thatthe latter enables the` operator to observe the amount of its .contentsat any time. Furthermore, the heating of the substance to be sprayed, e.g., insecticide, as it passes from the reservoir to the discharge nozzlerenders the spray more eiective; and the rings of different sizes on theow pipe facilitate connection to A hose having an internal. diameter vsteam hoses of sizes varying within limits. Various changes may be madein the specic construction and arrangement of parts without departingfrom the invention as dened in the claims.

I claim:

1. A spraying apparatus comprising a sprayer head; a ow pipe carried bysaid head; a delivery tube carried by said head in cooperative relationto said ow pipe and extending downwardly from said head; a supportcomprising an annular base, and means connecting said head to said basefor supporting said head above said base; a reservoir for substance tobe sprayed insertable upwardly through said base; and means detachablyconnecting said reservoir to said head and in said support.

2. A spraying apparatus comprising a sprayer lhead including a screwthreaded body; a flow pipe carried by said head; a delivery tube carriedby said head in cooperative relation to said ow pipe and extendingdownwardly from said head; ay support comprising an annular base, andmeans connecting said head to said base for supporting said headabovesaidA base; and a reservoir for substance to be. sprayed insertableupwardly through said base and being provided with screw threadsengaging with the screw-threaded body of said head and in said support.

3. A spraying apparatus comprising a sprayer head a ow pipe carried bysaid head;. a delivery tube carried by saidhead in cooperative relationto said ow pipe and extending downwardly from said head; a supportcomprising an annular base, and spacedlegs connecting said head to saidbase for supporting said head above said base; a transparent reservoirfor substance to be sprayed insertable upwardly through said base; andmeans detachably connecting said reservoir to'said head and in saidsupport, the depth ofthe-reservoir being ,such that the reservoirvbottom is disposed above the bottom of said annular base.

WILLIAM M. NICOSON.

